Abstract: Apparatus for cryogenic separation of elastomeric products from metallic products and textile fibers combined as composite waste products having two cryogenic chambers capable of alternately receiving waste composite products to be directly contacted by a cryogenic fluid and for alternately discharging cryogenically frozen products therefrom. The chambers are in communication through a valved duct for transferring the cryogenic fluid from one chamber to the other alternately and there is a pressure equalizing valved duct to facilitate the fluid transfer in an equalized pressure environment. The chambers are rotatable through an angle sufficient to permit the cryogenic fluid transfer to be effected by gravity from one chamber to the other alternately, so that when one of the chambers is operating as a cryogenic chamber, the other can be discharged and reloaded and vice-versa.

Abstract: A slicing machine for cutting waste tires into pieces which can be stored in considerably compacted volumes for further use or disposal thereof. The machine includes a rotatively driven chuck plate having a plurality of perpendicularly arranged pins for supporting a waste tire by its beads, a freely rotatable follower plate driven by a pressure supplying fluid mechanism against the chuck plate, and knives arranged perpendicularly to the chuck plate and to the follower plate and extending towards each other over the edges of the plates, such that when the tire is pressed between the plates, the knives will slice and cut the tire.